package diamondRingServlet;

import com.alibaba.fastjson.JSON;
import diamondRingEntity.DiamondRingUser;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;
import java.io.PrintWriter;

//获取用户id和名称，为空则重新赋值
@WebServlet("/UserName")
public class UserName extends HttpServlet {
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        request.setCharacterEncoding("utf-8");
        response.setContentType("text/html;charset=utf-8");
        response.setCharacterEncoding("utf-8");
        HttpSession session=request.getSession();
        PrintWriter out=response.getWriter();
        DiamondRingUser user=new DiamondRingUser();
        Integer id=null;
        id=(Integer)session.getAttribute("id");
        String name=null;
        name=(String)session.getAttribute("name");
        if (name==null && id==null){
            user.setUserId(0);
            user.setLoginName("");
            out.print(JSON.toJSONString(user));
        }else {
            user.setUserId(id);
            user.setLoginName(name);
            out.print(JSON.toJSONString(user));
        }

        out.flush();
        out.close();

    }

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doPost(request,response);
    }
}
